Coupling the hydraulic hose lines

All hydraulic hoses are equipped with handles. The handles have colour markings with a code number or a code letter. The markings are assigned to the respective hydraulic functions of the pressure line of a tractor control unit. Stickers are applied on the machine for the markings, which illustrate the respective hydraulic functions.

The tractor control unit is used with different types of actuation, depending on the hydraulic function:

Type of actuation

Function

Symbol

Latching

Permanent oil circulation

Momentary

Oil circulation until action is executed

Floating

Free oil flow in the tractor control unit

Designation

Function

Tractor control unit

Red

Pressure-free return flow

The pressureless return flow must always be coupled.

Maximum line pressure less than 5bar

Fan hydraulic motor

Switching on

Single-acting

Coulter pressure

Increase

Reduce

Green

Soil tillage machines

Hydraulically folded lighting

Unfolding

Folding

Double-acting

Coulter displacement

Telescope out

Telescope in

Double-acting

IMPORTANT
Implement damage due to insufficient hydraulic oil return flow
On the tractor side, only use lines that correspond to the nominal width of red T of the implement or larger for the pressureless hydraulic oil return flow.
Select short return paths.
Connect the pressureless hydraulic oil return flow to the intended coupling before all of the other hydraulic connections.

If the implement has a leakage oil line:

couple the leakage oil line in the intended coupling.
Install the supplied coupling sleeve on the pressureless hydraulic oil return.

  1. Depressurise the hydraulic system between the tractor and the machine using the tractor control unit.
  2. Clean the hydraulic plugs.
  3. First, couple the red T hydraulic hose line on the corresponding hydraulic socket on the tractor.
  4. Couple the red 1 hydraulic hose line on the corresponding hydraulic socket on the tractor.
  5. Couple the remaining hydraulic hose lines 1 to the hydraulic sockets of the tractor according to the marking 2.

The hydraulic plugs lock perceptibly.

  1. Route the hydraulic hose lines with sufficient freedom of movement and without chafing points.